Perhaps you should try some spelling variations:
yuhan ting » yuan ting
wang yuhan » wang luhang, wang yan, wang yidan
liang tan » liang dan, liang sun, wing tan
ping wang » ping pong, hong wang
john song » john wong, john bonn, john ngosong
kong siu » kong eiu, wong siu, dong sin
dong di » dong sin

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((liang tan) OR (dong di)) wang yuhan ting ((ping wang) OR (john song)) kong siu ;~.
• Adding a wildcard symbol may retrieve word variants: ((liang tan) or (dong di)) wang yuhan ting ((ping wang) or (john song)) kong siu ;*.